DRAFT
TD 93021US
17 July 2017 / Ver. PF3
140
Installation Guide
teleCARE IP
8.6
Principle of the Wireless Infrastructure
In an environment consisting mainly of wireless devices, a full wireless infrastructure can be achieved
using a wireless gateway (NIRC3 + NUREP) in combination with wireless repeaters (NUREP), To create a
wireless gateway, a wireless repeater (NUREP) is connected via a USB cable to a room controller (NIRC3).
The wireless gateway is located at a central location. Around the central location repeaters (NUREP) will
be used to relay the wireless messages towards the wireless gateway in three subnets containing a
maximum of four repeaters per subnet.
Key advantages of using a wireless infrastructure over a wired infrastructure are:
• Reduced installation costs because less cabling and labour are required.
• Higher flexibility during system planning.
• Easier to expand.
• Less or no disturbance of residents in case of renovation.
Figure 181. Wireless infrastructure principle
Note:
The wireless infrastructure is compatible with the teleCARE IP wireless functionality
using room controllers (NIRC3) with NIRX mounted. Be aware that wanderer/access control
requires hard wired devices to function, therefore wanderer control will not function when
using a full wireless infrastructure only.
8.6.1 Wireless Infrastructure RF Planning Considerations
At all possible locations, an NITX must be seen by at least one wireless repeater. To avoid an overload of
RF messages being sent to the wireless server, for example in overlapping areas, an NITX must not be seen
by more than a maximum of three wireless repeaters.